Since Apple officially released Mac OS X Lion today I thought it would be nice to have an official thread that contains all Tips & Tricks, rather than having to skim through tons of pages in different threads.

I'll start off with a few of my own:

Disable Resume on a per-app basisYou can disable resume on an per-app basis by locking the folder inside ~/Library/Saved Application State (~ = Home folder) that corresponds with it. You guys might find this useful if you're looking after disabling resume for - let's say - TextEdit only, rather than system-wide.

Make the ~/Library folder visible againLaunch Terminal located in /Applications/Utilities or via Spotlight, type in the below command and hit return.

chflags nohidden ~/Library

Alternatively you can hide it again by typing in

chflags hidden ~/Library

Get Drag Lock back when using a trackpadApple moved the Drag Lock preference from the Trackpad preference pane to Universal Access. Go to System Preferences > Mouse & Trackpad > Trackpad Options...

Change the Dashboard space background patternWhat to do:1. Replace pirelli.png in /System/Library/CoreServices/Dock.app/Contents/Resources with a desktop picture of choice. Be sure the image matches the exact resolution of your screen and has a dpi of 720.

2. Make a second version of the desktop picture only this time 256 x 144 pixels in size (might depend on your Mac though) and replace mini_pirelli.png also located in the same directory as above. That way the background in Mission Control also gets changed.

Get QuickTime Player 7 Pro backInsert your Mac OS X Snow Leopard disc, go to the Optional Installs folder and double-click the Optional Installs installer. In the "Customize..." section you can select QuickTime 7. Alternatively you can also go to the below link and download the installer directly from Apple.

Enable the archive feature in MailRight click the toolbar, click customize, and add the archive button. A folder named "Archive" will be created and your messages will be kept there and out of your inbox.

Improve font smoothing on secondary third party LCDsIn Terminal:

defaults -currentHost write -globalDomain AppleFontSmoothing -int 2

Before/After

Use the "arrange" Finder toolbar button to "sort" insteadHold down option before clicking

Quickly access the now hidden library directoryHold down option in the "Go' menu

"Cut and paste" with the keyboardAfter a CMD+C, use OPT+CMD+V to "paste"

I know this is a bit much to ask but ever since I have used Mac OS I have wanted to have an autohide menu bar - I would love if it functioned like when you're using full screen apps.

In Snow Leopard (according to Menu Eclipse developer) this was a no go for some reason - he might implement that in the next version since Lion supports it ( http://itunes.apple....420041409?mt=12 - this version does not support it yet)